The Sprint Showdown on Friday night will be a 40-lap race, split into two segments of 20 laps each. The five yellow-flag laps during the break do not count. Teams have the option of pitting between segments but just as in a regular race, risk losing track position.

Qualifying on Friday will be set by traditional time trials with single-car runs and the best of two laps determining the qualifying time.

For the All-Star race, qualifying will be Saturday night and will consist of single-car runs of three laps with a mandatory four-tire pit stop. There will be no pit-road speed so crew members cannot leave the pit wall until the car comes to a complete stop in the pit stall.

The main event is 90 laps — four 20-lap segments and one final 10-lap segment. The five yellow-flag laps between segments do not count.

Drivers do not have to pit after the first, second or third segments and risk losing track position if they do pit. After the fourth segment, drivers will line up by average finish of the first four segments (with ties broken by the fourth-segment finish). They all will then come down pit road and must do a four-tire pit stop. The restart order will be determined by how they come off pit road.

There will then be a 10-lap dash to the finish. Only green flag laps will count.

In other rules:

• If the yellow comes out before the white flag at the end of the race, there will be unlimited green-white-checkered finishes for the Sprint All-Star Race. There will be the regular limit of three green-white-checkereds for the Sprint Showdown.

• The free pass will be used whenever the yellow is thrown, even between segments.

• The teams can work on cars during a red flag.

• The two drivers who advance from the Showdown and the fan vote driver who advances will get to qualify their cars for the race Saturday. If they crash while crossing the finish line for the Showdown (or if the fan-vote driver crashes during the Showdown), they can fix the damage or use backup cars, if NASCAR approves, for the all-star race.

• Teams will not be allowed to work on cars in the limited time between qualifying and the race itself. Teams can top off on fuel but must start the race on the tires they use for qualifying.